MasterRX:

0x55

ROM

Function

Flow

Profile

M/F=0x99

bq26100

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SLUS696B – JUNE 2006 – REVISED AUGUST 2015

7.4 Device Functional Modes

7.4.1 Profile Command

Pack manufacturers can use the profile command to determine how the device should be programmed.

Figure 7. Profile Command Flow

7.4.2 Sleep Mode Description

The bq26100 device enters sleep mode when the SDQ enters a stop state or when SDQ encounters an invalid

ID.

7.5 Programming

7.5.1 Communicating with the bq26100 Device

The bq26100 device communication protocol starts when the host pulls the bus low for reset time. All devices on

the bus are to respond with a presence pulse, which is active low. The host can then transmit the ROM Function

command, which is used to address the devices on the bus. The ROM functions include Match ID, Skip ID, Read

ID, and Search ID.

Match ID

The host transmits the 64-bit ID of the 1-wire based device to communicate.

Skip ID

No ID is necessary for communication. Used only if one device is connected to the host.

Read ID

The 1-wire slave transmits its 64 bit address. This command is only useful if there is only one

device connected to the host.

Search ID

Useful if there are multiple devices on the bus. This command initiates a communication with a

single device, but it is more useful in allowing the host to determine the address of every device

on the bus. The Match ID can then be used to communicate with a specific addressed device.

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